Roof construction



J. MACNAUG HTON AND W. T. OLDRIEVE.

ROOF CONSTRUCTION.

APPLICATION FILED Nov, 3, 1921.

Patented Mar. 28, 1922.

{SHEETS-SHEET. 1.

J. MACNAUGHTON AND W. T. OLDR!EVE.

ROOF CONSTRUCTION- APPLICATION FILED NOV, 3, 1921.

1,410,823, D Patented Ma1.28,1922.

2 SHEETSSHEET 2.

UNITED STATES.

JOSEPH MAGNAUGHTON, or AIR/BRIE, AND WILLIAM 'r. OLDRIEVE, or

, SCOTLAND.

PATIENT OFFICE.

EDINBURGH,

Boer CONSTRUCTION. I

Application filed November 3, 1921.

To all whom it may concern.

Be it known that we, JosnPH MAONAUGH- TON and WILLIAM THOMAS OLDRIEVE, subjects ot' the King of the United Kingdom of Great Britain and Ireland, and residing at Airdrie, Lanarkshire, Scotland, and Edinburgh, Scotland, respectively, have invented a certain new and useful Improvement in Roof Construction, (for which I have filed application in Great Britain, Oct. 29, 1920,) of which the following is a specification.

This invention relates to roofs for buildings in which the atmosphere is more or less saturated with moisture and it has for its primary object to provide an improved construction designed to prevent dripping of water globules formed on the interior surface by condensation of vapour.

A construct'on of roof according to th invention is illustrated in the accompanying drawing in which Fig. 1 is a section of the roof and Fig. 2 a detail View of a suitable form of exhaust port.

As shown in Fig. 1, the entire interior area of the roof presents an uninterrupted smooth surface. That part of the roof marked A overlying almost all the floor area is in one plane and is at an inclination greater than the angle of rest of water globules, so as to provide for the uninterrupted flow of such water globules toward the lower and outer edge thereof. The part A merges smoothly into a portion C, the said portion being concave, and curving downwardly toward the edge remote from the portion A. The inner surfaces of the portions A and C are continuous and the portion A is tan gential to the surface C. The free-or remote edges of the said portions are vertically clear of the floor area, so that any drip from the remote edges of the said portions will be beyond the floor area, The portion C has ports D through which a circulation may be maintained by mechanical or other means,

Specification of Letters Patent.

of the drip will be beyond the Patented Mar. 28, 1922. Serial No. 512,524.

shown, the drip will be deflected to the inner faces of the said walls by the root.

It will be evident that any drops of water which may collect upon the inner surface of the roof, either on the portion. A or the per tion C, will run down said portions to the remote edges thereof, before such drops will fall. Since such remote edges of the portions A'and C are beyond the floor area, all floor area, and such area will be kept free from the water drip.

'The roof is preferably composed of reinforced concrete but may be of any other suitable material.

We claim A roof of which the entire interior area presents an uninterrupted smooth surface,

said roof comprising a part disposed vertically above almost all the floor area, said part being in oneplane and at a greater inclination than the angle of rest of water globules suspended from the under side thereof, so as to provide for an uninterrupted flow of water globules towards the lower edge, and a downwardly curved portion at the high edge of the first named portion and continuous therewith and to which the first named portion is tangential at the highest portion of the said roof, the remote edges of the two said portions being at the edges of the floor area, thereby to conduct condensed water drops beyond the floor area. In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOSEPH MACNAUGHTON, W. T. OLDRIEVE. Witnesses: 

